摘要
钻孔灌注桩与预应力锚杆组合是经过钻孔灌注桩与预应力锚杆、桩顶冠梁生成围护结构,其支护体系经过总体刚度避免基坑变形。通过钻孔灌注桩挡土,预应力锚杆把支护结构承载的力传导稳定地层,锚杆施加张拉应力有助于锚固体和土体摩擦力、拉杆和锚固体的握裹力与锚杆强度共同作用,保证锚固体稳定。鉴于此,作者结合实践研究,对钻孔灌注桩与预应力锚杆组合在基坑支护的运用展开分析。
The combination of bored cast-in-place pile and prestressed anchor rod is through bored cast-in-place pile,prestressed anchor rod and pile top crown beam to form the enclosure structure,and its supporting system avoids the deformation of foundation pit through the overall stiffness.Through the bored cast-in-place pile to block the soil,the prestressed bolt transmits the force carried by the supporting structure to stabilize the strata.the tensile stress applied by the anchor rod is helpful to the friction force between the anchor body and the soil,the holding force of the tension rod and the anchor body and the strength of the anchor rod,to make sure the anchor is stable.In view of this,the author combines the practice research,carries on the analysis to the bored pile and the prestressed anchor rod combination in the foundation pit support application.
出处
《科技创新与应用》
2019年第8期160-161,共2页
Technology Innovation and Application
关键词
钻孔灌注桩
预应力锚杆
基坑支护
应用方法
bored pile
prestressed anchor rod
foundation pit support
application method
